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1.ÓëconstÏà±È£¬ºêÊÇÔÚÔ¤±àÒëµÄʱºòÍê³ÉµÄ
2.define Ö»×ö¼òµ¥µÄÌæ»»£¬²»×öÀàÐͰ²È«¼ì²é
3.ʹÓò»µ±»áÒýÆðºÜ¶àÎÊÌâ
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1.¼òµ¥µÄºê¶¨Òå
#define  MAX 1024
2.ºê¶¨Ò幦ÄÜ¿é
#define MAX(a,b) (a)>(b)?(a):(b)      //±È½Ï´óСµÄºê
3¶¨Ò庯ÊýʵÏÖ·ºÐÍ
#define SORT(Type) void Buble_sort(Type a[],int len) { \
bool is_swap=true;\
for(int i=0;i<len&&is_swap;++i)\
{\
is_swap = false;\
for(int j=0;j<len-i;++j)\
{\
if(a[j]>a[j+1])\
{\
Type t;\
t=a[j];\
a[j+1] = a[j];\
a[j]=t;\
is_swap = true;\
}\
}\
}\
}
SORT(int);
SORT(double);
SORT(float);
SORT(unsigned int);
4.¶¨ÒåÀà
  #define   _DECL_class(name,   element   )\  
  class   df_##nm\  
  {\  
  protected:\  
  element         *pData;\  
  int num;\  
  \  
  void   _resize(int   n);\  
  \  
  public:\  
  nm(   ){};\  
  \  
  int   Count()   const   {   return   num;   }\  
  \};  
   
   
  _DECL_class(   cls_example,   int   );  


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}
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